Siemens SINUMERIK 840D sl Function Manual page 648

K1: Mode group, channel, program operation, reset response
9.18 Program runtime / part counter
System variables for workpiece counting
System variable
$AC_REQUIRED_PARTS
$AC_TOTAL_PARTS
$AC_ACTUAL_PARTS
$AC_SPECIAL_PARTS
Note
All workpiece counters are set to "0" when the control runs up with default values and can be
read and written independent of their activation.
Activation
The workpiece counter is activated with the machine data:
MD27880 $MC_PART_COUNTER (activation of workpiece counters)
Bit
0
1
4
5
6
7
8
648
Meaning
Number of workpieces to be produced (setpoint number of workpieces)
In this counter the number of workpieces at which the actual workpiece
count ($AC_ACTUAL_PARTS) will be reset to "0" can be defined.
MD27880 can be used to activate the generation of the display alarm:
"Channel %1 workpiece target = %2 reached"
and of the channel-specific NC/PLC interface signal:
DB21,
.
Total number of completed workpieces (actual workpiece total)
This counter specifies the total number of workpieces produced since
the start time. The value is only automatically reset to "0" when the
control runs up with default values.
Number of completed workpieces (actual workpiece total)
This counter registers the total number of workpieces produced since
the start time. On condition that $AC_REQUIRED_PARTS > 0, the
counter is automatically reset to "0" when the required number of work‐
pieces ($AC_REQUIRED_PARTS) is reached.
Number of workpieces selected by the user
This counter supports user-specific workpiece counts. An alarm can be
defined to be output when the setpoint number of workpieces is reached
($AC_REQUIRED_PARTS). Users must reset the counter themselves.
Value Meaning
1 $AC_REQUIRED_PARTS is active
0 Alarm / signal output in case of: $AC_ACTUAL_PARTS = $AC_REQUIRED_PARTS
1 Alarm / signal output in case of: $AC_SPECIAL_PARTS = $AC_REQUIRED_PARTS
1 $AC_TOTAL_PARTS is active.
0 $AC_TOTAL_PARTS is incremented by the value "1" through M02/M30.
1 $AC_TOTAL_PARTS is incremented by the value "1" through the M command defined
with MD27882[0].
0 $AC_TOTAL_PARTS is also active for program test / block search.
1 $AC_TOTAL_PARTS is incremented by the value "1" upon a jump back with GOTOS.
1 $AC_ACTUAL_PARTS is active
DBX317.1 (workpiece target reached)
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions